Arrangement in grinding or polishing band



May 15, 1951 A. BEYER-oLsEN 2,983,941

ARRANGEMENT INGRINDING 0R PoLIsHING BAND Filed April 5, 1957 z*United States Patent O rice 2,983,941 ARRANGEMENT 1N RINDING 0R roLrsrnNG Arthur Beyer-Olsen, Prinsensgate 6, Oslo, Norway Filed Apr. 5, 1957, senNo. 650,963 claims priority, application Noiway Mar. z5, 1951 'Ilhe present invention relates to a grinding or polishing band of steel wool, and has for its object to provide such Until now, 'noone'has succeeded'in producing asteel Wool product which may lbe used mechanically at the same time retainingthe advantage of the great surface and the exibility of steel wool. Furniture manufacturers, who are users of the greatest quantities of steel wool, have had to use steel wool more or less manually. Due to its greater strength, abrasive cloth or sand paper may for instance be used in grinding or polishing machines, but with such the same work as by means of steel wool cannot be accomplished. Abrasive cloth and sand paper are substantially a grinding material, while steel Wool in the manufacture of furniture is a dulling material, which actually is the only product usable for the dulling of super polished surfaces.

Steel wool bands have previously been proposed made from braided or in another way spun steel wool. Such bands, however, do not have sucient strength. It has further been a great problem to prevent the steel wool from getting lumpy and to avoid an uneven distribution of the steel wool material in the band. To obtain a good grinding or dulling itis also necessary that the steel wool laments Aare oriented across the direction of grinding.

It has been proposed previously to produce polish bands from textile threads or similar material wrapped up .by one or more wound layers of steel Wool. Such bands, however, have the filaments extending more or less diagonally and they also have a somewhat uneven or rough surface which results in insuiiicient grinding.

It is an object of the invention to provide a grinding band in which all lilaments are aligned in a direction perpendicular to the grinding direction so that an absolutely even and maximum grinding action is obtained, the lament bundles being arranged at the same time in the band so that an uneven distribution of the steel wool in the band is effectively prevented without thereby substantially reducing the great and advantageous surface of lthe steel wool.

According to the invention this is accomplished by providing a warp of material of a suitable thread for instance textile with a thick untwisted weft of steel wool in the form of a string or rope of steel Wool filaments, said string being woven in the warp threads so that all the steel wool filaments will extend substantially across the length of the band. During the weaving of the steel wool band, the weft is firmly compressed as it is placed in the warp so that the warp is totally embedded in the steel wool material. Undesired marks on the surface of the object ground are thereby avoided.

To securely prevent local accumulation or formation of steel wool lumps in the band it has proved favorable to give steel wool a certain 'freedom of movement in relation to the Warp. 'Ihis warp therefore preferably consists of closed thread rings.

, a band which does not have the` drawbacks incidental to@ previous proposals for the mechanical use ofY steel wool.

yPatented May 16), 1961 2 Other and further objects of the invention will become apparent from the drawings in which: Y

Fig. 1 shows how asteel wool band according to in- Vention is built up.

Fig. 2 is a perspective view of a band having the form of an endless or ring-like body.

Fig. 3 is a cross section along the line II-II in Fig.k 2. Fig. 4 shows how to form a Iband as shown in Fig. 2. Fig. 5 shows a modified method ofproducing a steel wool band according to the invention.

The steel wool string 1 :in Fig. 1 consisting of mutually parallel steel wool filaments extending in the directionof the string, is woven in a warp Z of textile threads. VThe weft is compressed in the warp so that the finished band will have a mat-like appearance in which all the filaments lie substantially across thelength of the hand, the warp gelds being Well covered inthe middle-ofthe grinding f n i i In the grinding band here described Vthesteel, lmateiral is arranged in an effective way so that local displacements are prevented. At the same time an even `and uniform surface is obtained, giving a very even and effective grinding action.

In placing the grinding band in position for use, it is preferably placed around a grinding drum, the warp threads 2 and 2 then being connected, so that a closed grinding band is obtained.

By simple means grinding bands of different width and lengh for various purposes may -be delivered.

For special purposes warp threads of steel wire or similar material may be desirable. Also warp threads made from artificial products in certain cases may be advantageous.

According to the invention, the steel wool thus will maintain in the band its favourable properties of loosely arranged fine sharp filaments. The fine grading and the great volume together with the softness yand flexibility of the steel wool make it very suitable for fine polishing of high polished furniture. The embedding of the warp threads in the steel band, so that it is entirely hidden by a relatively thick weft of steel wool, creates a soft band surface consisting of steel wool filaments only, oriented perpendicularly to the direction of grinding. This cannot be obtained with steel wool filaments spun or twisted from pure steel Wool or from steel wool mixed With fibres, or from filaments of another material. As an additional advantage both sides of the steel wool band may be used. When one side `is worn out the band is turned inside out for use of the other side. The steel wool material is thereby given an extremely effective utilization.

The band according to Figs. 2 and 3 diiers from that according to Fig. l in that it consists of a suitable number of warp threads 2 forming closed thread rings on which a weft of unspun steel wool 1 having parallel iilaments is woven. r[he band according to Fig. 2 is thus ring-like and extends absolutely uniformly around its entire circumference.

Fig. 4 shows how a band according to Fig. 3 may be produced. The band is iirst Woven as a mat 10 in a manner similar to that disclosed in Fig. l, and comprises unspun steel Wool iilaments woven on the warp threads 12. The ends of the mat are then bent down so that a ring is formed and the protruding Warp thread ends are smoothly joined so that closed thread rings 12 are obtained for the cyiindrical grinding or polishing band 10'.

Fig. 5 shows a further modification. The warp 3 consists here of a helically Wound thread on which is woven a continuous layer 5 of unspun parallel steel wool filaments 4.

I claim:

1. An abrading belt comprising a helically-shaped filament of tension-resisting material, adjacent passes thereof being axially spaced in parallel, side-by-side relation, and a continuous string of unt'wisted steel wool fibers inter- Woven vvith 'thewpsses of said :filament v*substantially normal thereto.

2. Inafpolishing andabradng-beltforfmachineuse,

a plurality of endless warp filaments each lyingside-byf'sid'e in"ajrespectivebneV of aplurality' of parallel planes,

and a weft comprising alcontinuous'string of untwisted .'steelwool bers interwoven ewith all said filaments, said weft being'compacted in'the direction of said filaments to;comp1etely enclose andy conceal said tilamen'ts.

3. In a polishing :and abradng beltfor machine use,a.

nfplurality ofendless warp lamentseach positioned in i side-byt-siderelation'in a respective one of a plurality of n'iformly and equally spaced'para'llel planes, anda weft comprisinga continuous string of 'untwisted steel wool bers interwoven with all said Warp il'aments,` contiguous and conceal the same. y

`4. In an endless belt for belt-type polishing andl abrading machines, a plurality of discrete warp filaments each positioned in a respective one of a plurality of equallyspaced parallel planes to define a flat belt-like structure, and a weft comprising a continuous strand of untwisted steel wool iibers interwoven with and about all said lilaments transversely thereacross,y contiguous passes of said strand being compacted together to completely enclose said yfilaments.

References Cited in the le of this. patent lUNITED STATES PATENTS 1,698,511 Robbins Ian. 8, 1929 1,975,407 Rossman Oct. 2, 1934 2,164,286 Stybr June 27, 1939 2,748,445 Skeer et al. June 5, 1956 2,786,256 Axelsson Mar. 26, 1957 FOREIGN PATENTS 263,608 Switzerland Sept. 15, 1949 y443,351 Great Britain Feb. 26, 1936 985,222 France Mar. 7, 1951 

